package com.wenzhoujie.library.customview;

import android.content.Context;
import android.graphics.drawable.Drawable;
import android.text.Editable;
import android.text.TextWatcher;
import android.util.AttributeSet;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnFocusChangeListener;
import android.view.animation.Animation;
import android.view.animation.CycleInterpolator;
import android.view.animation.TranslateAnimation;
import android.widget.EditText;

import com.wenzhoujie.library.R;

public class ClearEditText extends EditText implements OnFocusChangeListener, TextWatcher
{
	private Drawable mClearDrawable;

	private boolean hasFoucs;

	public ClearEditText(Context context)
	{
		this(context, null);
	}

	public ClearEditText(Context context, AttributeSet attrs)
	{
		this(context, attrs, android.R.attr.editTextStyle);
	}

	public ClearEditText(Context context, AttributeSet attrs, int defStyle)
	{
		super(context, attrs, defStyle);
		init();
	}

	private void init()
	{
		mClearDrawable = getCompoundDrawables()[2];
		if (mClearDrawable == null)
		{
			mClearDrawable = getResources().getDrawable(R.drawable.selector_edt_delete);
		}

		mClearDrawable.setBounds(0, 0, mClearDrawable.getIntrinsicWidth(), mClearDrawable.getIntrinsicHeight());
		setClearIconVisible(false);
		setOnFocusChangeListener(this);
		addTextChangedListener(this);
	}

	@Override
	public boolean onTouchEvent(MotionEvent event)
	{
		if (event.getAction() == MotionEvent.ACTION_UP)
		{
			if (getCompoundDrawables()[2] != null)
			{

				boolean touchable = event.getX() > (getWidth() - getTotalPaddingRight()) && (event.getX() < ((getWidth() - getPaddingRight())));

				if (touchable)
				{
					this.setText("");
				}
			}
		}

		return super.onTouchEvent(event);
	}

	@Override
	public void onFocusChange(View v, boolean hasFocus)
	{
		this.hasFoucs = hasFocus;
		if (hasFocus)
		{
			setClearIconVisible(getText().length() > 0);
		} else
		{
			setClearIconVisible(false);
		}
	}

	protected void setClearIconVisible(boolean visible)
	{
		Drawable right = visible ? mClearDrawable : null;
		setCompoundDrawables(getCompoundDrawables()[0], getCompoundDrawables()[1], right, getCompoundDrawables()[3]);
	}

	@Override
	public void onTextChanged(CharSequence s, int start, int count, int after)
	{
		if (hasFoucs)
		{
			setClearIconVisible(s.length() > 0);
		}
	}

	@Override
	public void beforeTextChanged(CharSequence s, int start, int count, int after)
	{

	}

	@Override
	public void afterTextChanged(Editable s)
	{

	}

	public void setShakeAnimation()
	{
		this.setAnimation(shakeAnimation(5));
	}

	public static Animation shakeAnimation(int counts)
	{
		Animation translateAnimation = new TranslateAnimation(0, 10, 0, 0);
		translateAnimation.setInterpolator(new CycleInterpolator(counts));
		translateAnimation.setDuration(1000);
		return translateAnimation;
	}

}
